Create missing powershell setup files

[bothzoli]

Add setup.ps1 and verify.ps1 for bisect kata
Add setup.ps1 for git-attributes kata
Add setup.ps1 for git-tag kata
Add setup.ps1 for master-based-workflow kata
Add setup.ps1 for merge-driver kata
Add setup.ps1 for pre-push kata
Add setup.ps1 and verify.ps1 for rebase-exec kata

Resolves: #164
Resolves: #261

[RandomSort]

Thank you for adding the missing powershell!